• Oldcastle APG

• Aucutt's Inc.

• B. I. Industries

• Bloch Lumber Company

• Blok-Lok Ltd.

• Brickyard Inc.

• Dixie Diamond Mfg.

• Dylon Industries

• Elkem Materials Inc.

• Elliott Diamond

• Hi-Way Concrete Products

• Hillen Corporation

• International Chimney Corp.

• International Masonry Institute

• International Refractory Services Corp.

• Kasten Masonry Sales

• Lehigh Portland Cement Co.

• Maier: Ernest Maier

• Montfort Brothers

• Mosites Construction Company

• Rutland Fire Clay Co.

• Sanders Saws

• Sauereisen

• Shope Reno Wharton Associates

• Specco Industries, Incorporated

• Tri-Boro Construction Supplies, Inc.

• Whitacre-Greer

• Windon International Hardwoods, Inc.